Beginning Ajax With ASP.NET (2006).pdf

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1 Introduction to Ajax on ASP.NET Over the years, we developers have seen many changes in terms of how development occurs. We have gone from terminal-based programming to PC-based programming to Windows-based programming to the web. Now we are on the verge of another programming revolution. This programming revolution will bring more interactive user interfaces to Web applications. This programming revolution is brought to developers courtesy of a set of technologies that are generally known as Ajax (Asynchronous JavaScript And XML). No longer will users see the annoying flash with the click of a button to submit data. No longer will users lose the context where they are located and be thrown back to the top of a page. With Ajax, developers can build applications that step out of the traditional postback model of the web, provide an improved user interface to users, and allow developers to develop applications that are much more user-friendly. In this chapter, you are going to take a look at: ❑ ❑ ❑ ❑ ASP.NET development and how it led to Ajax What Ajax is and a high-level overview of some of its base technologies The advantages of Ajax Some things that it might not make sense to do with Ajax Development Trends If you have been developing for a while, like us old guys, you have gone through several iterations of development. Development has gone from terminals connected to mainframes and minicomputers to personal computers and then to client-server development. Client-server development allowed for the minimization of back-end resources, network resources, and the front-end PC by sending only the necessary data between back end and front end. Intelligent client-server development allowed for building applications that were responsive to the user and made efficient use of network and back-end resources. As the web development methodology took off in the late 1990s, we unfortunately returned to terminal-style development. In this methodology, any major operation
Chapter 1 between the client and server requires that all data be sent in what is called a round trip. With a round trip, all data from the form is sent from the client to the web server. The web server processes data, and then sends it back to the client. The result of a round trip is that lots of data is sent back and forth between the client and server. For example, form data, viewstate, and images may be sent back and forth without the need to be sent back and forth. Figure 1-1 shows how only a web browser is required at the client and how communications work with the web server being an intermediary between the client and any resources. Web browser Client HTTP postback with all form elements, viewstate, and associated data. Full page including form elements, viewstate, images, and such. Web server along with various databases and other resources. Figure 1-1 ASP.NET Development ASP.NET is a set of web development technologies produced by Microsoft that is used to build dynamic web sites, web applications, and XML-based web applications. ASP.NET is a part of the .NET framework and allows developers to build applications in multiple languages, such as Visual Basic .NET, Jscript, and C#. Design Methodology ASP.NET attempts to make the web development methodology like the graphical user interface (GUI) development methodology by allowing developers to build pages made up of controls similar to a GUI. A server control in ASP.NET functions similarly to GUI controls in other environments. Buttons, textboxes, labels, and datagrids have properties that can be modified and expose events that may be processed. The ASP.NET server controls know how to display their content in an HTML page just like GUI-based user controls know how to display themselves in their GUI environment. An added benefit of ASP.NET is that the properties and methods of the web server controls are similar, and in some cases the same as, those of comparable controls in the Windows GUI/Winforms environment. Problems ASP.NET Solves 2 Microsoft has released various web application development methodologies over the past 10 years. Why do developers need ASP.NET? What problems does ASP.NET solve that the previous development methodologies did not solve?
Page 2: Beginning Ajax with ASP.NET Wallace
Page 6 and 7: Beginning Ajax with ASP.NET Wallace
Page 8 and 9: Executive Editor Bob Elliott Senior
Page 10 and 11: About the Authors Wallace B. “Wal
Page 12: Acknowledgments It is truly interes
Page 15 and 16: Contents Manipulating the Style She
Page 17 and 18: Contents Chapter 7: Ajax.NET Profes
Page 19 and 20: Contents Chapter 11: Atlas Controls
Page 22 and 23: Introduction Thank you for purchasi
Page 24 and 25: Tips, hints, tricks, and asides to
Page 28 and 29: Introduction to Ajax on ASP.NET Mic
Page 30 and 31: Introduction to Ajax on ASP.NET ❑
Page 32 and 33: Introduction to Ajax on ASP.NET ❑
Page 34 and 35: Who’s Using Ajax? Introduction to
Page 36 and 37: 2 Introduction to DHTML Dynamic HTM
Page 38 and 39: Writing Your First Block of JavaScr
Page 40 and 41: Introduction to DHTML document.writ
Page 42 and 43: Introduction to DHTML Figure 2-3 Ex
Page 44 and 45: Introduction to DHTML The return ke
Page 46 and 47: Introduction to DHTML var isArrowLe
Page 48 and 49: Using the innerHTML Property Introd
Page 50 and 51: To illustrate this behavior, the ne
Page 52: Introduction to DHTML Now that you
Page 55 and 56: Chapter 3 From Static to Dynamic
Page 57 and 58: Chapter 3 Within the section of th
Page 59 and 60: Chapter 3 Just a reminder of what w
Page 61 and 62: Chapter 3 /* */ Datatypes These are
Page 63 and 64: Chapter 3 Composite types are requi
Page 65 and 66: Chapter 3 These sets of operators a
Page 67 and 68: Chapter 3 var y = 0; do { y = y + 1
Page 69 and 70: Chapter 3 Figure 3-1 shows the resu
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Chapter 3 window navigator location
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Chapter 3 There are four levels of
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Chapter 3 var featuresLevel1 = [“
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Chapter 3 Take a look at a simple e
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Chapter 3 For this particular examp
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Chapter 3 The method getElementById
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Chapter 3 Cloning a Node This
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Chapter 3 Node Type Type Descriptio
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Chapter 3 Figure 3-7 Figure 3-8 68
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Chapter 3 The DOM, Styles, and CSS
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Chapter 3 Try It Out Modifying a St
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Chapter 3 which includes a script f
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4 The XMLHttpRequest Object The XML
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The XMLHttpRequest Object above, Op
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The XMLHttpRequest Object while the
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The XMLHttpRequest Object The secon
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Using the responseText Property The
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The XMLHttpRequest Object As you ca
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Next listed in the following code b
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The XMLHttpRequest Object } // Exec
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The XMLHttpRequest Object Property
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The XMLHttpRequest Object - Select
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The XMLHttpRequest Object In additi
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The XMLHttpRequest Object xmlHttpOb
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The XMLHttpRequest Object at System
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5 Data Communication: XML, XSLT, an
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1986 by ISO standard “ISO 8879:19
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Consider the following code sample
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Data Communication: XML, XSLT, and
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X Path Data Communication: XML, XSL
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6 What Is Built into ASP.NET ASP.NE
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What Is Built into ASP.NET
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What Is Built into ASP.NET
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What Is Built into ASP.NET ❑ ❑
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method. This method allows a develo
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What Is Built into ASP.NET Client/B
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What Is Built into ASP.NET Client/B
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What Is Built into ASP.NET // Get o
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What Is Built into ASP.NET using Sy
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What Is Built into ASP.NET Value S
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DataSet object with some data and s
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Dealing with the Returned Data on t
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What Is Built into ASP.NET // Add t
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What Is Built into ASP.NET } names.
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What Is Built into ASP.NET ❑ Para
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explicit server-side coding is requ
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Chapter 7 Acquiring Ajax.NET Pro Ve
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Chapter 7 The server-side code that
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Chapter 7 So, your entire server-si
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Chapter 7 What Is a Language Proxy?
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Chapter 7 Using strings will get yo
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Chapter 7 the name and street prope
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Chapter 7 Chapter7_ImageSwitcherCal
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Chapter 7 Checking for Null Values
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Chapter 7 The fourth script source
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8 Anatomy of Ajax.NET Pro Library T
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Anatomy of Ajax.NET Pro Library Fig
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Anatomy of Ajax.NET Pro Library Mas
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Line 25 creates the actual JavaScri
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Anatomy of Ajax.NET Pro Library 09.
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Anatomy of Ajax.NET Pro Library 19.
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Anatomy of Ajax.NET Pro Library 105
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What Is an Ajax.NET Pro Converter?
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9 Other Ajax Frameworks for .NET Aj
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Testing for Features Using the Sari
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Attaching an event to check for the
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The framework contains supporting c
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Other Ajax Frameworks for .NET lock
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Panels versus Custom Controls Once
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Other Ajax Frameworks for .NET cust
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Creating the Solution 1. Open Visua
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Other Ajax Frameworks for .NET Not
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Other Ajax Frameworks for .NET Swit
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Other Ajax Frameworks for .NET Figu
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Other Ajax Frameworks for .NET Imag
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Other Ajax Frameworks for .NET } }
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Other Ajax Frameworks for .NET feat
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Other Ajax Frameworks for .NET bord
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txtTitle_TextChanged event and will
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Other Ajax Frameworks for .NET Fina
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Other Ajax Frameworks for .NET
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Other Ajax Frameworks for .NET Fina
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Other Ajax Frameworks for .NET cont
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Other Ajax Frameworks for .NET The
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Other Ajax Frameworks for .NET back
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On the server side, ComfortASP.NET
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Chapter 10 ❑ Client-side componen
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Chapter 10 Now that you have heard
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Chapter 10 This code shows how an e
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Chapter 10 OnServerException Examin
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Chapter 10 } function ServerAddRetu
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Chapter 10 DataRow var strRowsInfo
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Chapter 10 { } return (objComplexCu
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Chapter 10 New Time:
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Chapter 10 function CallInternalWe
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Chapter 10 Number The Number class
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Chapter 10 The Sys.Data.DataColumn
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Chapter 10 The following is some co
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Chapter 10 NamespaceName.ClassName.
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Chapter 10 Inheritance Inheritance
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Chapter 10 Try It Out Implementing
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Chapter 10 Figure 10-14 Enumeration
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Chapter 10 Figure 10-16 282
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Chapter 10 Summary In this chapter,
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Chapter 11 var associatedElement =
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Chapter 11 Setting the EnablePartia
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Chapter 11 Just to show that there
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Chapter 11 How It Works In this exa
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Chapter 11 Now that you have seen t
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Chapter 11 Try It Out You will noti
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Chapter 11 listView.set_layoutTempl
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Chapter 11 Binding Directions As pr
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Chapter 11 3. The validationErrorLa
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Chapter 11 Regex Validation Exam
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Chapter 11
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Chapter 11 Hide Show
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12 Atlas Integration with ASP.NET S
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Atlas Integration with ASP.NET Serv
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❑ ❑ ScriptFolder — In this co
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Try It Out Retrieving Profile Prope
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❑ A special connectionString is u
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13 Debugging Debugging is the art o
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Debugging Figure 13-2 In either cas
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Using Alert Statements Starting wit
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Try It Out Client-Side Script Debug
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Debugging Figure 13-9 4. In the Scr
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Debugging Figure 13-12 Right-clicki
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So far, you have used F10 to advanc
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Debugging Debugger Keyword Test Pa
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Debugging Figure 13-16 Try It Out U
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Debugging The Command window will h
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Debugging Although this section of
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install the Venkman tool within Fir
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Debugging true); xmlHttpObj.open(
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Debugging TestFiddler.aspx.cs — C
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Debugging Figure 13-25 This is usef
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Debugging using System.Collections;
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Debugging Replace the text button%2
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A XSLT Commands This appendix provi
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XSLT Commands Element preserve-spac
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Boolean XSLT Commands The boolean f
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XSLT Commands Name adjust-dateTime-
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XSLT Commands Name Description subs
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Index
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AjaxPro.AjaxMethod() attribute Ajax
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attributes (continued) attributes (
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Command window Command window, 346-
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document-uri(node) function (XSLT)
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frameworks frameworks Ajax.NET Pro
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functions (XSLT) (continued) functi
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JavaScript (continued) JavaScript (
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libraries (continued) libraries (co
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methods (XSLT) (continued) methods
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Microsoft Atlas project (continued)
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port port 80, 103 port numbers in c
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server-side frameworks (continued)
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value-of element (XSLT) value-of el
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XSLT elements (continued) XSLT elem
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